SONOMA, Calif. – Race fans attending the Kawasaki AMA Superbike Showdown, presented by Supercuts, this weekend at Infineon Raceway should not be affected by an overnight construction project that will close Highway 37 between the raceway and Vallejo. The California Department of Transportation will undertake an overnight paving project this Friday, Saturday and Sunday. The 12-mile stretch of Highway 37 between the raceway and the Wilson Ave. overcrossing in Vallejo will be impacted in the following ways: · Closed Friday at 10 p.m., re-open Saturday by 8 a.m. · Closed Saturday at 10 p.m., re-open Sunday by 9 a.m. · Closed Sunday at 10 p.m., re-open Monday by 5 a.m. Highway 37 west of the raceway will not be closed or otherwise affected by the construction. Those traveling to the raceway using Highway 101 in Marin County will follow the normal route on Highway 37 eastbound, making a left at Highway 121 and into the facility at Gate 1. Gates do not open until 8 a.m. over race weekend, with on-track action beginning at 9 a.m. on Saturday and Sunday, and main events set to begin after noon each day. For fans arriving early, before the highway re-opens, the California Department of Transportation will have highly visible detour signs from the east side of the bay. For those coming from Fairfield-east (Interstate 80), you are encouraged to take the following directions: · Highway 12 exit toward Napa. · Right on Highway 29 toward Napa. · Left at Highway 121. Follow for approximately 15 miles to Infineon Raceway. For those traveling on Interstate 80 west of Vallejo, you are encouraged to take the Richmond-San Rafael Bridge, continue onto Highway 101 north and take the Highway 37 east exit toward Sonoma. Follow for 10 miles, taking a left at Highway 121. Raceway is one-quarter mile up on the left-hand side. For more information, visit www.511.org or call 511. More, from an update issued by Infineon Raceway: Closed Friday at 9:00 p.m., re-open Saturday by 7:00 a.m. Closed Saturday at 8:00 p.m., re-open Sunday by 7:00 a.m. Closed Sunday at 10:00 p.m., re-open Monday by 5:00 a.m.